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KR970002416A - Color liquid crystal display element - Google Patents

Color liquid crystal display element Download PDF

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KR970002416A
KR970002416A KR1019960025036A KR19960025036A KR970002416A KR 970002416 A KR970002416 A KR 970002416A KR 1019960025036 A KR1019960025036 A KR 1019960025036A KR 19960025036 A KR19960025036 A KR 19960025036A KR 970002416 A KR970002416 A KR 970002416A
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liquid crystal
substrate
electrode
crystal display
display device
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KR100210651B1 (en
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지로 다케이
히사시 아오키
데츠시 요시다
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가시오 가즈오
가시오게산키 가부시키가이샤
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Priority claimed from JP7186577A external-priority patent/JPH0915656A/en
Priority claimed from JP7186573A external-priority patent/JPH0915655A/en
Priority claimed from JP24235195A external-priority patent/JPH0961854A/en
Application filed by 가시오 가즈오, 가시오게산키 가부시키가이샤 filed Critical 가시오 가즈오
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/58—Dopants or charge transfer agents
    • C09K19/586—Optically active dopants; chiral dopants
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/04—Materials and properties dye
    • G02F2202/046—Materials and properties dye fluorescent
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0469—Details of the physics of pixel operation
    • G09G2300/0478—Details of the physics of pixel operation related to liquid crystal pixels
    • G09G2300/0482—Use of memory effects in nematic liquid crystals
    • G09G2300/0486—Cholesteric liquid crystals, including chiral-nematic liquid crystals, with transitions between focal conic, planar, and homeotropic states

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Mathematical Physics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

본 발명은 액정표시소자에 관련된 것으로, 특히 2색성 염료를 포함하는 카이럴네마틱액정을 이용한 컬러액정표시소자에 관한 것으로서, 컬러액정표시소자는 복수의 제1전극을 구비한 제1기판과, 상기 제1기판에 대향하여 배치되어 상기 제1기판에 대향하는 면에 상기 제1전극에 대향하는 적어도 1개의 제2전극을 구비한 제2기판과, 상기 제1기판과 제2기판간에 봉입되어 2색성 염료와 카이럴물질이 배합되어 액정재료로 구성되고, 상기 제1전극과 제2전극이 대향하는 부분에 의하여 정의되는 각 화소영역에 대응시켜서 복수의 형광체층이 배치되고, 이 형광체층의 빛이 입사하는 면과는 반대측에 이들 형광체층에 대응시켜서 상기 각 형광체층을 투과한 빛을 반사시키기 위한 백색기초층이 배치되어 있는 것을 특징으로 한다.The present invention relates to a liquid crystal display device, and more particularly to a color liquid crystal display device using a chiral nematic liquid crystal including a dichroic dye. The color liquid crystal display device includes a first substrate having a plurality of first electrodes, A second substrate disposed opposite to the first substrate and having at least one second electrode opposing the first electrode on a surface facing the first substrate; and a second substrate, which is sealed between the first substrate and the second substrate A plurality of phosphor layers are arranged in correspondence with the respective pixel regions defined by the portions where the first electrode and the second electrode are opposed to each other and a dichroic dye and a chiral substance are mixed and constituted of a liquid crystal material, And a white base layer for reflecting light transmitted through the respective phosphor layers in correspondence with the phosphor layers is disposed on the side opposite to the side on which the light is incident.

Description

컬러액정표시소자Color liquid crystal display element

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명의 제1실시예에 있어서의 액정표시소자의 구조를 나타내는 단면도, 제2도는 제1도에 나타낸 액정표시소자에 있어서의 TFT 기판의 구조를 나타내는 평면도.FIG. 1 is a cross-sectional view showing a structure of a liquid crystal display element according to a first embodiment of the present invention, and FIG. 2 is a plan view showing the structure of a TFT substrate in the liquid crystal display element shown in FIG.

Claims (22)

복수의 제1전극을 구비한 제1기판과, 상기 제1기판에 대향하여 배치되어 상기 제1기판에 대향하는 면에 상기 제1전극에 대향하는 적어도 1개의 제2전극을 구비한 제2기판과, 상기 복수의 전극의 각각에 의하여 정의되는 각 화소영역에 대응시켜서 배치된 복수의 형광체층과, 상기 형광체층의 빛이 입사하는 면과는 반대측에 이들 형광체층에 대응시켜서 배치되어 상기 각 형광체층을 투과한 빛을 반사시키기 위한 반사수단과, 2색성 염료와 카이럴물질이 배합되어 상기 제1기판과 제2기판간에 트위스트배향시킨 상태에서 봉지된 액정재료를 구비하는 것을 특징으로 하는 컬러액정표시소자.A first substrate having a plurality of first electrodes and a second substrate disposed opposite to the first substrate and having at least one second electrode facing the first electrode on a surface facing the first substrate, A plurality of phosphor layers arranged in correspondence with the respective pixel regions defined by each of the plurality of electrodes and a plurality of phosphor layers arranged in correspondence with the phosphor layers on a side opposite to a side on which light enters the phosphor layers, And a liquid crystal material encapsulated in a state in which a dichroic dye and a chiral substance are mixed and twisted between the first substrate and the second substrate so as to be aligned. Display element. 제1항에 있어서, 상기 반사수단은 반사광의 스펙트르분포가 실질적으로 평탄한 광학적 특성을 갖는 백색기초층으로 이루어지는 것을 특징으로 하는 컬러액정표시소자.The color liquid crystal display device according to claim 1, wherein the reflecting means is made of a white base layer having optical characteristics in which the spectral distribution of reflected light is substantially flat. 제2항에 있어서, 상기 제1전극은 투명한 도전재료로 형성되고, 상기 제1기판은 백색물질로 형성되고, 상기 백색기초층을 겸하는 것을 특징으로 하는 컬러액정표시소자.The color liquid crystal display device according to claim 2, wherein the first electrode is formed of a transparent conductive material, and the first substrate is formed of a white material and also serves as the white base layer. 제1항에 있어서, 상기 반사수단은 상기 제1전극의 위에 형성되고, 상기 형광체층은 상기 반사수단의 위에형성되는 것을 특징으로 하는 컬러액정표시소자.The color liquid crystal display device according to claim 1, wherein the reflecting means is formed on the first electrode, and the phosphor layer is formed on the reflecting means. 제1항에 있어서, 상기 제1전극은 상기 반사수단의 위에 형성된 투명도전막으로 구성되고, 상기 형광체층은상기 제1전극의 위에 형성되는 것을 특징으로 하는 컬러액정표시소자.The color liquid crystal display device according to claim 1, wherein the first electrode is formed of a transparent conductive film formed on the reflective means, and the phosphor layer is formed on the first electrode. 제1항에 있어서, 상기 제1전극은 제1기판의 한쪽면에 형성된 투명도전막으로 구성되고, 상기 형광체층은상기 제1전극의 위에 형성되고, 상기 반사수단은 상기 제1기판의 다른쪽면에 형성되는 것을 특징으로 하는 컬러액정표시소자.The organic electroluminescence device according to claim 1, wherein the first electrode comprises a transparent conductive film formed on one surface of a first substrate, the phosphor layer is formed on the first electrode, And the color liquid crystal display element is formed. 제1항에 있어서, 상기 반사수단은 상기 제1기판상에 형성된 광반사성의 도전막으로 이루어지고, 상기 형광체층은 상기 반사수단의 위에 형성되고, 상기 제1전극은 상기 형광체층상에, 이 형광체층에 의해 상기 도전성의 반사수단과 전기적으로 절연되어 형성되는 것을 특징으로 하는 컬러액정표시소자.The light emitting device according to claim 1, wherein the reflecting means comprises a light-reflective conductive film formed on the first substrate, the phosphor layer is formed on the reflecting means, and the first electrode comprises, on the phosphor layer, Layer is electrically insulated from the conductive reflecting means. 제1항에 있어서, 상기 반사수단은 광반사성을 갖는 도전재료에 의해 형성되어 있으며, 상기 제1전극과 실질적으로 일체로 형성되는 것을 특징으로 하는 컬러액정표시소자.The color liquid crystal display device according to claim 1, wherein the reflecting means is formed of a conductive material having light reflectivity, and is substantially integrally formed with the first electrode. 제1항에 있어서, 상기 형광체층은 적색, 녹색, 청색중 적어도 1색의 형광을 발하는 형광물질이 첨가된 수지에 의해 형성되는 것을 특징으로 하는 컬러액정표시소자.The color liquid crystal display device according to claim 1, wherein the phosphor layer is formed of a resin to which a fluorescent material emitting fluorescence of at least one of red, green, and blue is added. 제1항에 있어서, 상기 복수의 제1전극에 각각 대응시켜서 접속되고, 상기 제1기판상에 배치된 복수의 액티브소자를 또한 구비하는 것을 특징으로 하는 컬러액정표시소자.The color liquid crystal display element according to claim 1, further comprising a plurality of active elements connected to the plurality of first electrodes, respectively, and arranged on the first substrate. 제10항에 있어서, 상기 액티브소자는 게이트전극과 해당 게이트전극을 덮는 게이트절연막과, 반도체층과,소스 및 드레인전극을 구비하고, 상기 반사수단은 상기 게이트전극과 동일한 금속막을 패터링하여 형성된 광반사성을 갖는 금속막으로 이루어지는 것을 특징으로 하는 컬러액정표시소자.The semiconductor device according to claim 10, wherein the active element comprises a gate insulating film covering the gate electrode and the gate electrode, a semiconductor layer, and source and drain electrodes, Wherein the transparent electrode is made of a metal film having reflectivity. 제10항에 있어서, 상기 반사수단은 소정의 전압이 인가되는 도전성재료로 구성되고, 상기 제1전극과 절연막을 통하여 대향배치되고, 상기 제1전극에 의해 보상용량을 형성하는 것을 특징으로 하는 컬러액정표시소자.11. The color filter according to claim 10, wherein the reflecting means is made of a conductive material to which a predetermined voltage is applied, and is disposed opposite to the first electrode through an insulating film, and the compensation capacitance is formed by the first electrode Liquid crystal display element. 제10항에 있어서, 상기 액티브소자는 절연막을 끼워서 적층된 2개의 도전막으로 구성되고, 다이오드특성을 갖는 2단자소자로 이루어지며, 한쪽의 도전막은 상기 제1전극에 접속되고, 다른쪽의 도전막은 표시해야 할 데이터에따른 신호를 공급하는 신호선에 접속되는 것을 특징으로 하는 컬러액정표시소자.11. The device according to claim 10, wherein the active element is composed of two conductive films laminated with an insulating film sandwiched therebetween, and is made of a two-terminal element having a diode characteristic, one conductive film is connected to the first electrode, And the film is connected to a signal line for supplying a signal according to data to be displayed. 제1기판과, 상기 제1기판의 위에 매트릭스상으로 형성된 복수의 액티브소자와, 상기 액티브소자를 덮어서상기 제1기판상에 형성된 절연막과, 대응하는 액티브소자에 접속되어 상기 절연막상에 매트릭스상으로 형성된 화소전극과, 상기 제1기판에 대향하여 배치된 제2기판과, 상기 제2기판의 상기 제1기판에 대향하는 면에 형성된 대향전극과, 2색성염료와 카이럴물질이 배합되어 상기 제1기판과 제2기판간에 트위스트배향시킨 상태로 봉지된 액정재료와, 상기 화소전극또는 상기 대향전극에 적층하여 형성된 형광체층을 구비하는 것을 특징으로 하는 컬러액정표시소자.A plurality of active elements formed in a matrix on the first substrate; an insulating film formed on the first substrate so as to cover the active element; and a second active element connected to the corresponding active element, A counter electrode formed on a surface of the second substrate opposite to the first substrate, and a dichroic dye and a chiral substance are mixed together to form the pixel electrode, 1. A color liquid crystal display device comprising: a liquid crystal material sealed in a twisted orientation between a first substrate and a second substrate; and a phosphor layer laminated on the pixel electrode or the counter electrode. 대향면에 전극이 형성되고, 또한 소정의 배향처리가 실시되며, 소정의 셀갭(D)을 갖고 대향하여 배치된한쌍의 기판과, 상기 한쌍의 기판간에 봉지되어 트위스트각(θ)이 90°내지 300°이고 2색성 염료가 첨가되어 상기 셀갭(D)과 피치(P)의 비(D/P)가A pair of substrates arranged opposite to each other with a predetermined cell gap (D) formed thereon, electrodes are formed on the opposing surfaces and subjected to a predetermined alignment treatment, and a pair of substrates which are sealed between the pair of substrates to have a twist angle 300 ° and a dichroic dye is added so that the ratio (D / P) of the cell gap (D) to the pitch (P) θ/2π-1/4＜D/P＜θ/2π? / 2? -1 / 4 <D / P <? / 2? 를 만족하는 카이럴네마틱액정재료로 구성되는 것을 특징으로 하는 컬러액정표시소자.Wherein the coloring material is a chiral nematic liquid crystal material. 제15항에 있어서, 상기 카이럴네마틱액정재료는 액정분자의 기판면에 대한 프레틸트각이 3°내지 10°인것을 특징으로 하는 컬러액정표시소자.16. The color liquid crystal display device according to claim 15, wherein the chiral nematic liquid crystal material has a pretilt angle of 3 DEG to 10 DEG with respect to a substrate surface of liquid crystal molecules. 제15항에 있어서, 상기 기판의 대향면에서는 수평배향처리가 실시되어 있는 것을 특징으로 하는 컬러액정표시소자.The color liquid crystal display device according to claim 15, wherein a horizontal alignment process is performed on the opposing surface of the substrate. 제15항에 있어서, 상기 액정표시소자는 반사판을 또한 구비하는 것을 특징으로 하는 컬러액정표시소자.16. The color liquid crystal display device according to claim 15, wherein the liquid crystal display element further comprises a reflection plate. 제15항에 있어서, 상기 복수의 제1전극에 각각 대응시켜서 접속되어 상기 제1기판상에 배치된 복수의 액티브소자를 구비하는 것을 특징으로 하는 컬러액정표시소자.16. The color liquid crystal display device according to claim 15, further comprising a plurality of active elements connected to the plurality of first electrodes in correspondence with each other and arranged on the first substrate. 제15항에 있어서, 상기 복수의 전극의 각각에 따라서 정의되는 각 화소영역에 대응시켜서 배치된 복수의 형광체층과, 상기 형광체층의 빛이 입사하는 면과는 반대측에 이들 형광체층과 대응시켜서 배치되고, 상기 각 형광체층을 투과한 빛을 반사시키기 위한 반사수단을 또한 구비하는 것을 특징으로 하는 컬러액정표시소자.16. The light emitting device according to claim 15, further comprising: a plurality of phosphor layers arranged in correspondence with the pixel regions defined by the plurality of electrodes; and a plurality of phosphor layers arranged in correspondence with the phosphor layers on the side opposite to the light incident side of the phosphor layers And a reflecting means for reflecting the light transmitted through each of the phosphor layers. 제15항에 있어서, 상기 반사수단은 반사광의 스펙트로분포가 실질적으로 평탄한 광학적 특성을 갖는 백색기초층으로 이루어지는 것을 특징으로 하는 컬러액정표시소자.16. The color liquid crystal display device according to claim 15, wherein the reflection means is made of a white base layer having optical characteristics in which the spectrodisplaced distribution of reflected light is substantially flat. 제15항에 있어서, 상기 액정재료의 층은 대향하는 전극간에 인가되는 전압에 따라서 게스트·호스트형의 카이럴네마틱액정을 이용한 페이즈체인지형으로서 동작하는 것을 특징으로 하는 컬러액정표시소자.The color liquid crystal display device according to claim 15, wherein the layer of the liquid crystal material operates as a phase change type using a chiral nematic liquid crystal of a guest-host type according to a voltage applied between opposing electrodes. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960025036A 1995-06-30 1996-06-28 Color liquid crystal display device Expired - Fee Related KR100210651B1 (en)

Applications Claiming Priority (6)

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JP95-186573 1995-06-30
JP7186577A JPH0915656A (en) 1995-06-30 1995-06-30 Liquid crystal display device
JP95-186577 1995-06-30
JP7186573A JPH0915655A (en) 1995-06-30 1995-06-30 Liquid crystal display device
JP95-242351 1995-08-29
JP24235195A JPH0961854A (en) 1995-08-29 1995-08-29 Color liquid crystal display element

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KR100508032B1 (en) * 1997-12-19 2005-11-09 삼성전자주식회사 Liquid crystal display

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EP2494404B1 (en) 2009-10-28 2014-12-10 Hewlett-Packard Development Company, L.P. Single-layer reflective display utilizing luminescence

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100508032B1 (en) * 1997-12-19 2005-11-09 삼성전자주식회사 Liquid crystal display

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